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New belimo FSNF120-fc us spring return actuator
BELIMO FSNF120-FC US Spring Return Actuator
The type FSLF spring-return actuator is intended for the operation of smoke and
combination fire and smoke dampers in ventilation and air-conditioning systems.
The actuator will meet requirements of UL555 and UL555S when tested as an
assembly with the damper and will meet requirements of UBC for 15 second
Square footage of damper operated will depend on make and model and the
Mounting of the actuator to the damper axle shaft or jackshaft is via a cold-weld
clamp. Teeth in the clamp and V-bolt dig into the metal of both solid and hollow
shafts maintaining a perfect connection. The specially designed clamp will not
crush hollow shafts. The bottom end of the actuator is held by an anti-rotation
strap or by a stud provided by the damper manufacturer.
The actuator is mounted in its fail safe position with the damper blade(s) closed.
Upon applying power, the actuator drives the damper to the open position. The
internal spring is tensioned at the same time. If the power supply is interrupted,
the spring moves the damper back to its fail-safe position.
The actuator contains no components which the user can replace or repair.
1/2" Threaded Connector Screw a conduit fi tting into the actuator s metal
bushing. Jacket the actuator s input wiring with suitable flexible conduit.
Properly terminate the conduit in a suitable junction box.
3/8" Flexible Connector Models (-FC Screw Connector) Mount the flexible
conduit into the actuator s metal bushing by means of the provided screw
with a torque of 1.2 Nm. Jacket the actuator s input wiring with suitable
flexible conduit. Properly terminate the conduit in a suitable junction box.120v
